Welded Carbon Structural Stainless Steel Tubing ASTM A53 Gr.B TypeE ERW
Product Details
structural steel tubing
,structural steel square tubing
ASTM A53 Gr.B TypeE ERW Welded Black Carbon Steel Pipes
Size range: O.D.: 6-168mm W.T.:1-15mm L: max 12000mm
Steel Grade and Chemical Compositions:
| Steel Grade | C | Mn | P | S | Cr | Cu | Mo | Ni | V |
| max | max | max | max | max | max | max | max | max | |
| A | 0.25 | 0.95 | 0.05 | 0.045 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| B | 0.30 | 1.2 | 0.05 | 0.045 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
Mechanical Properties:
| Grade | Tensil Strength Mpa | Yield Point Mpa | Elongtation % |
| A | ≥330 | ≥205 | 20 |
| B | ≥415 | ≥240 | 20 |
Manufacture:
Pipes are made by ERW process.
The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding to a minimum of 1000°F(540℃)so that no untempered martensite remains, or otherwise processed in such a manner that no untempered martensite remains.
Tolerance:
Diameter-- For pipe NPS1 1/2 (DN40) or smaller, the outside diameter at any point shall not vary more than ± 1/64in (0.4mm) from the specified outside diameter. For pipe NPS2 (DN50) or larger, the outside diameter shall not vary more than ±1% from the specified outside diameter.
Thickness—The minimum wall thickness at any point shall be not more than 12.5% under the specified wall thickness.
Weight(Mass):-- The weight(mass) of the pipe shall not vary more than ±10% from its specified weight(mass), as derived by multiplying its measured length by its specified weight(mass) per unit length.
Workmanship, Finish, and Appeaerance:
The pipe manufacturer shall explore a sufficient number of visual surface imperfections to provide reasonable assurance that they have been properly evaluated with respect to depth.
Test and Inspection:
- Mechanical Test
- Tension Test
- Flattening Test
- Hardness Test
- Bend Test
- Hydrostatic Test
- Nondestructive Electric Test
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